Extractor hoods with recirculation suck in the cooking vapors, filter the air with a carbon filter and then lead the cleaned air into the kitchen. This activated carbon filter absorbs grease and moisture and prevents unpleasant odors in the kitchen. To ensure that your appliance works perfectly and the kitchen retains a fresh smell, we recommend changing the carbon filter every 3 to 4 months - depending on how often it is used and the type of food being prepared (fried, fatty food, steam, etc.). Contents: 2 filters - dimensions: 190 x 40 mm